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Compare the features of three types of marketing automation tools.

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There are three common types of marketing automation tools - email automation, social media automation, and web analytics automation. Each type of tool has its own unique features and advantages. 

Email automation tools are used to create, manage, and track email campaigns. They allow users to design personalized emails, segment audience lists, and track the results of the campaigns. Social media automation tools, on the other hand, are used to automate tasks such as liking and posting content, managing comments, and scheduling posts. Finally, web analytics automation tools track website activity and analyze user behavior on the website in order to identify areas of improvement. 

In conclusion, email automation, social media automation, and web analytics automation tools each have their own features and benefits. Email automation tools are used for creating and tracking email campaigns, social media automation tools for managing content and comments, and web analytics automation tools for analyzing user behavior.